A kind of manufacture method of iron-chromium-aluminum metal fiber filter material

Abstract

A method for manufacturing Fe-Cr-Al metal fiber filter material, the main steps include cutting and loosening fiber raw materials, putting Fe-Cr-Al metal fiber fleece into the drum of a felting machine, and brushing the dried surface with alumina The powdered iron-chromium-aluminum plate is laid on the track of the felting machine to start paving, and the laid metal fiber and the iron-chromium-aluminum plate are put into the vacuum felt furnace; Press to level. The invention makes up for the defects of fragile ceramics, easy blockage of wire mesh, high temperature resistance and pressure resistance of filter cloth and filter paper; it adopts multi-layer vibration technology: it can force the metal fiber to be fully fluffy, ensuring uniform gradient and stability of filtration accuracy; rolling The leveling process plays a certain role in repairing the high-density bright spots and hard spots produced by the non-woven laying process; the filter material can work in a high temperature and relatively high pressure environment of 800-1200 °C.

Description

technical field [0001] The invention belongs to the scope of preparation of environment-friendly materials, in particular to a method for manufacturing an iron-chromium-aluminum metal fiber filter material. Background technique [0002] Metal fiber filter materials are generally sintered by stainless steel fibers and nickel fibers in a sintering furnace under high temperature and vacuum protection; the stainless steel sintered felt has a stable structure, good corrosion resistance, and high temperature resistance. After sintering, the sintered felt can continuously maintain the filter. The filter function of the cloth has the characteristics of three-dimensional network, porous structure, high porosity, large surface area, pore size, and uniform distribution; the traditional process generally uses hydraulic press hard extrusion, in case of high density produced by the non-woven laying process The dot block is very easy to press out bright spots, which will cause holes in use...

AI Technical Summary

Problems solved by technology

[0002] Metal fiber filter materials are generally sintered by stainless steel fibers and nickel fibers in a sintering furnace under high temperature and vacuum protection; the stainless steel sintered felt has a stable structure, good corrosion resistance, and high temperature resistance. After sintering, the sintered felt can continuously maintain the filter. The filter function of the cloth has the characteristics of three-dimensional network, porous structure, high porosity, large surface area, pore size, and uniform distribution; the traditional process generally uses hydraulic press hard extrusion, in case of high density produced by the non-woven laying process The dot block is easy to press out the bright spot, which will cause holes during use, which will seriously affect the product quality